Add hover tip callout to backend

app/models/user_callout.rb

@@ -30,7 +30,8 @@ class UserCallout < ApplicationRecord
     new_user_signups_cap_reached: 26,          # EE-only
     unfinished_tag_cleanup_callout: 27,
     eoa_bronze_plan_banner: 28,                # EE-only
-    pipeline_needs_banner: 29
+    pipeline_needs_banner: 29,
+    pipeline_needs_hover_tip: 30
   }
 
   validates :user, presence: true

doc/api/graphql/reference/index.md

@@ -13783,6 +13783,7 @@ Name of the feature that the callout is for.
 | <a id="usercalloutfeaturenameenumnew_user_signups_cap_reached"></a>`NEW_USER_SIGNUPS_CAP_REACHED` | Callout feature name for new_user_signups_cap_reached. |
 | <a id="usercalloutfeaturenameenumpersonal_access_token_expiry"></a>`PERSONAL_ACCESS_TOKEN_EXPIRY` | Callout feature name for personal_access_token_expiry. |
 | <a id="usercalloutfeaturenameenumpipeline_needs_banner"></a>`PIPELINE_NEEDS_BANNER` | Callout feature name for pipeline_needs_banner. |
+| <a id="usercalloutfeaturenameenumpipeline_needs_hover_tip"></a>`PIPELINE_NEEDS_HOVER_TIP` | Callout feature name for pipeline_needs_hover_tip. |
 | <a id="usercalloutfeaturenameenumregistration_enabled_callout"></a>`REGISTRATION_ENABLED_CALLOUT` | Callout feature name for registration_enabled_callout. |
 | <a id="usercalloutfeaturenameenumservice_templates_deprecated_callout"></a>`SERVICE_TEMPLATES_DEPRECATED_CALLOUT` | Callout feature name for service_templates_deprecated_callout. |
 | <a id="usercalloutfeaturenameenumsuggest_pipeline"></a>`SUGGEST_PIPELINE` | Callout feature name for suggest_pipeline. |